PLATE V. 



MAY-FLIES. 



FIG. PAGE 



1. Avieletus perscitus $ imago 40 



2. ,, ., nymph (magnified) 40 



3. ,, ,, $■ sub-imago 41 



4. Ichthybotus hudsoni $ imago 28 



5. ,, ., J imago 28 



6. ,, ,, $ sub-imago 29 



7. ,, ,, 2 sub-imago 29 



8. ,, ,, nymph (magnified) 28 



